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-rw-r--r--lib/Driver/Tools.cpp8
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 8ad04aa508..db5f92d8ec 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -1248,6 +1248,14 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
options::OPT_fno_assume_sane_operator_new))
CmdArgs.push_back("-fno-assume-sane-operator-new");
+ // -fconstant-cfstrings is default, and may be subject to argument translation
+ // on Darwin.
+ if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
+ options::OPT_fno_constant_cfstrings) ||
+ !Args.hasFlag(options::OPT_mconstant_cfstrings,
+ options::OPT_mno_constant_cfstrings))
+ CmdArgs.push_back("-fno-constant-cfstrings");
+
// -fshort-wchar default varies depending on platform; only
// pass if specified.
if (Arg *A = Args.getLastArg(options::OPT_fshort_wchar)) {